If you're looking for manga similar to Seija no Koushin, you might like these titles.
“You just die one day and turn into a mummy!” Mysterious mummified corpses that people have nicknamed “Mummily-sans” keep being found one after another, causing a lot of fuss. One day, a boy named Seita notices that his friend is acting strangely…?!
Marie is trapped in a horrible situation. She's being constantly tormented by her classmates and regularly molested by her teacher. With nowhere else to turn, she finds herself asking for supernatural help from one of the seven demons of the seven mysteries of her school. All she desires is the death of her cruel classmates and teacher. How far will Marie be willing to go in order to achieve the murders that would free her from her living hell?
In Keigo's school, all the troubled kids are grouped into one class -- the troublemakers, the abused kids, and the scarred ones. There's a quiet kid in his class named Asato who never talks to anyone, and like Keigo, doesn't want to go home after school. One day after class Keigo cuts himself, and the two of them discover that Asato has the ability to absorb the wounds of others. What wounds will Asato heal, and what scars does he himself carry...?
At that time, I had no idea. "I want to get close to Kotone senpai who I love", that island that I just visited with that feeling was not a "homicide demon's island" that the ghost strangers around the world are latent. Everyday of a boy, ethics, destiny collapses. The shivering survival suspense !!
“What to offer and what to wish for ... It's all up to you.” Supernatural story about Anten, the god who grants wishes in exchange for a heartfelt offering.
Set in Ibaraki, our protagonist is oppressed at home by his in-law family, and constantly bullied at school by his former best friends. His only friend is his pet dog, Iggy, who was rescued just before he was about to be euthanized. Can "unwanted pets" like them survive the ZQN panic...!?